Improvement in railway frogs



T. 1. & G. M. LAnK.

Railway Frogs. y No, 140,574, Patented my s, 1873.

gf gig. a

nllll c2" UNITED STATES PATENT QEEICE THOMAS J. CLARK AND GEORGE M. CLARK, OF HIGGANUM, CONNECTICUT.

IMPROVEMENT IN RAILWAY FROGS.

Specification forming part of Letters Patent No. 140,574, dated July 8, 1873; applcation filed January 6, 1873.

To all whom fit may concern."

Be it' known' that we, THOMAS J. CLARK and GEORGE M. CLARK, of Higganum, in the county of Middlesex and State of Connecticut, have invented certain new and useful Improvements in Railway Frogs, ot' which the following is a specification, reference being had to the acccmpanyin g drawings, in Which- Figure l is a top or plan view of a frog eulbodying our said improvements. Fig. 2 is a vertical longitudinal section of the same through the dotted line ma. Fig. Sis a crosssection of the same through the line :v1 w1. Fig. 4 is a cross-section of the same through the line a m2. Fig. 5 is a cross-section of the same through the line w3 w3.

All of the cross-sections are on an enlarged scale.

One feature of the invention consists in extending the ends of the frog beyond the ends of the point and side plates, so that the rails may lap upon the frog, say, eighteen or twenty inches, thus preventing the frog from tipping up and down as a wheel comes uponror leaves the frog. Another feature of the invention consists in connecting the ends of such extensions of the frog by a bolt or truss running under the length ofthe frog.

In the drawings, the letter a indicates the base or body of the frog; a', the wings by which it is fastened down; b, the point; and

c c, the side plates extending from c1 to c2. From each end of the frog proper projects the extensions d, say, about eighteen or twenty inches, having mortises d1 at the ends through which the base of the rail is slipped, the .end of the rail coming into the common mortise d2 in the end of the frog proper. This arrangement allows of a lapping ofthe rails upon the ends of the frog, soas to preventthe frog from tipping up and down when the Wheel strikes upon or goes off the frog. These extensions are bolted together for the sake of strength by means ot' the rod or truss e running under the frog through the piece d3, uniting the ends ofthe extensions and having the nuts e upon the ends.

We claim as our invention- 1. A railway frog having the extensions d beyond the ends of the frog proper, so that the rails may be lapped thereon, substantially as described, and for the purpose set forth.

2. A railway frog having extensions d connected by a bolt or truss, e, running under the frog, substantially as described, and for the purpose set forth.

THOMAS J.' CLARK. GEORGE M. CLARK.

Witnesses:

HENRY H. BEAINARD, S. G. NoRTH. 

